RLP73K3AR91FTDF Equivalent & Substitute Parts

Part Overview

The RLP73K3AR91FTDF is a 910 mOhms ±1% 2W chip resistor manufactured by TE Connectivity Passive Product in the 2512 (6432 Metric) package. This thick film current sense resistor operates across a temperature range of -55°C to 155°C and is classified as an active product. The component is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component requirements.

Substiute Parts

RLP73K3AR91FTDF

TE Connectivity Passive ProductIn Stock: 949RLP73K3AR91FTDF Datasheet

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RCWE2512R910FKEA

Vishay DaleIn Stock: 16768RCWE2512R910FKEA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RLP73K3AR91FTDF is determined by strict equivalence across the following parameters:

Electrical Specifications: Resistance value (910 mOhms), tolerance (±1%), and power rating (2W) must be identical. The thick film composition and current sense application define the functional category.

Mechanical Compatibility: The 2512 (6432 Metric) package designation is mandatory. Physical dimensions and termination count (2 terminations) must match or be within the specified seated height tolerances.

Environmental & Compliance Requirements: Operating temperature range (-55°C ~ 155°C), ROHS3 compliance, and MSL 1 rating establish the baseline compliance framework. Additional certifications such as AEC-Q200 represent enhanced qualification but do not disqualify substitution.

Packaging Format: Tape & Reel (TR) packaging maintains supply chain consistency.

The RCWE2512R910FKEA from Vishay Dale meets all mandatory electrical and mechanical parameters while providing additional automotive qualification (AEC-Q200) and moisture resistance features.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: The RLP73K3AR91FTDF remains the specified component when TE Connectivity supply chain integration and existing qualification documentation are required.

Substitute Selection: The RCWE2512R910FKEA from Vishay Dale provides direct electrical and mechanical equivalence with the following distinctions:

The RCWE2512R910FKEA incorporates AEC-Q200 automotive qualification, which extends component reliability assurance for automotive applications. The temperature coefficient specification of ±100ppm/°C (versus ±200ppm/°C for the RLP73K3AR91FTDF) indicates improved temperature stability. Moisture resistance features are explicitly documented for the Vishay Dale component.

Both components maintain identical resistance, tolerance, power rating, package format, operating temperature range, and compliance certifications. Physical dimensions are within acceptable tolerances (RLP73K3AR91FTDF: 0.250" L × 0.124" W; RCWE2512R910FKEA: 0.248" L × 0.124" W).

Selection between these components depends on application-specific requirements for automotive qualification and temperature coefficient performance rather than functional incompatibility.

Frequently Asked Questions (FAQ)

Q: Can the RCWE2512R910FKEA replace the RLP73K3AR91FTDF in existing designs?

A: Yes. Both components share identical electrical specifications (910 mOhms ±1%, 2W), operate across the same temperature range (-55°C ~ 155°C), and use the 2512 (6432 Metric) package. Physical dimensions are equivalent within manufacturing tolerances. Both are ROHS3 compliant with MSL 1 rating.

Q: What is the significance of the AEC-Q200 rating on the RCWE2512R910FKEA?

A: AEC-Q200 is an automotive qualification standard that establishes reliability and quality requirements for passive components in automotive applications. This certification is present on the Vishay Dale component but not specified for the TE Connectivity component. Applications requiring automotive-grade components benefit from this qualification.

Q: How do the temperature coefficients differ between these parts?

A: The RLP73K3AR91FTDF specifies ±200ppm/°C, while the RCWE2512R910FKEA specifies ±100ppm/°C. The lower temperature coefficient of the Vishay Dale component indicates superior resistance stability across temperature variations. Selection depends on circuit tolerance requirements.

Q: Are the physical dimensions identical?

A: Dimensions are equivalent within standard manufacturing tolerances. The RLP73K3AR91FTDF measures 0.250" L × 0.124" W (6.35mm × 3.15mm) with maximum seated height of 0.033" (0.84mm). The RCWE2512R910FKEA measures 0.248" L × 0.124" W (6.30mm × 3.15mm) with maximum seated height of 0.028" (0.70mm). Both fit the 2512 package specification and are compatible with standard PCB layouts.

Q: Do both components support current sense applications?

A: Yes. Both the RLP73K3AR91FTDF and RCWE2512R910FKEA are specified for current sense applications. The thick film composition and low resistance value (910 mOhms) are characteristic of current sense resistors used in power management and monitoring circuits.

Q: What is the inventory status for these components?

A: The RLP73K3AR91FTDF has 909 pieces in stock. The RCWE2512R910FKEA has 16,667 pieces in stock. Availability should be confirmed with the supplier for production requirements.

Q: Are both components compliant with environmental regulations?

A: Yes. Both components are ROHS3 compliant and REACH unaffected. Both carry ECCN classification EAR99 and HTSUS code 8533.21.0030.